Terminal bank.



J. N. REYNOLDS.

TERMINAL BANK.

APPLICATION FILED SEPT. n. 1915.

1,257,394. Patented Feb.26,1918. 2 V

UNITED STATES PATENT OFFICE.

JOHN N. REYNOLDS, OF GREENWICH, CONNECTICUT, ASSIG-NOR, BY MESNE ASSIGN-MENTS, TO WESTERN ELECTRIC COMPANY, INCORPORATED, A CORPORATION OF NEWYORK.

TERMINAL BANK.

Specification of Letters Patent.

Patented Feb, 26, 1918.

Application filed September 17, 1915. Serial No. 51,259.

To all whom it may concern:

Be it known that'I, JOHN NEWBERRY RnYNoLns, a citizen of the UnitedStates, residing at Greenwich, in the county of Fairfield and State ofConnecticut, have invented. certain new and useful Improvements inTerminal Banks, of which the following is a full, clear, concise, andexact description.

This invention relates to contact banks for switches of the panel type.

One of the objects of the invention is the provision of a contact bankin which the projecting switch contacts are formed as integral rebentportions of line terminal wires or strips.

Another object ofthe invention is to so twist or cross the Wiresorstrips forming the terminals of a group of conductors individualto aline that inductive action will be prevented and crosstalk will thus beavoided.

A further feature of the invention is the provision of a panel bankhaving the above advantages in which the contacts will be arranged onopposite sides thereof.

Referring to the drawing, Figure 1 is a plan view of a section of thepanel bank.

of the above described character; Fig. 2 shows a modification of thebank shown in Fig. 1; Fig. 3 is a similar view of another modification;Fig. 4 is a similar view of still another modification; and Fig. 5 is aface view showing the arrangement of the contacts of the modificationshown in Fig. 4.

Referring first to Fig. 1, it will be noted that; all the contacts ofthe several sets shown thereon are formed as projecting or rebentportions of two pairs of terminal wires 1, 2 and 3, 4. The contacts 1, 11 1, etc., are all formed as projecting or rebent portions of the wire1, and the contacts 2, 2 etc., are formed as similar integral portionsof the wire 2. Likewise the contacts 3, 1, etc., are formed from thestrips 3 and 4 respectively.

The contact bank shown in Fig. 1 is designed to be used with a structuresuch as that shown in Patent 1,172,585, issued February 22, 1916, toHenry F. Dobbin, and the series or rows of contact sets are so arrangedthat the same switch may traverse I either one or the other of a pair ofadjacent would be in a companion row or series with the set of terminals3 and 1, and would be positioned at the same relative position in theseries.

The twisted arrangement of the terminal wires, as herein shown,effectually prevents all crosstalk. It is, of course, to be understoodthat the wires or strips are coated with an insulating substance, suchas enamel or shellac, before they are formed into a terminal set. Thecoating may afterward be removed from the projecting 'or contactportions in any desired manner.

In Fig. 2, a bank is shown' in which there are three contacts in a setand consequently three terminal strips or wires 5, 6 and 7, the contacts5', 5 and 5 being formed as rebent or projecting portions of the wire 5,while contacts 6, 7 etc., are formed as rebent portions of the wires 6and 7 respectively.

In Fig.3 is shown a portion of a bank similar to that shown in Fig. 1with the exception that the rows of contact sets are separated from eachother and do not occur in pairs. In this bank, contacts 8, 8 etc., areformed from the wine 8, while the contacts 9, 9 etc., are formed fromthe wire 9. In Fig. 4 is shown a bank designed for use with a switchsuch as shown in Patent- 1,122,642, issued December 29, 1914, to John N.Reynolds. In this modification the contacts 10, 11 and 12, etc., areformed from.

the wires 10, 11 and 12 respectively It is thought that this figuretaken with ig. 5 is self-explanatory and need not be further described.

In the completed bank the individual groups or sets of terminal stripswill be insulatively mounted one above the other in a bank with thesimilar terminals of the several groups arranged in rows. This ispreferably accomplished by inserting the strips in a mold with only thecontact portions projecting therefrom, and then casting or pouring themolten insulating material about the body portions of the strips. Ifdesired, however, the bank may be built up in a manner similar to thatdisclosed in Patent 1,127,741 issued February 9, 1915, to Amos F. Dixon.

What is claimed is:

1. A terminal bank for switches comprising a plurality of longitudinallyextending separated. conductors, each conductor being provided betweenits ends with a plurality of contact surfaces projecting therefrom, anda mounting strip in which said conductors are secured in non-inductiverelation to each other.

2-. A terminal bank for switches compris ing a plurality oflongitudinally extending COILdUGtOIS,Q&C/h conductor being providedbetween its ends with a plurality of integrally formed contact surfacesprojecting therefrom, and a mounting strip in which said conductors aresecured in non-inducti'v'e relation to each other with the contactsurfaces thereof projecting from said strip.

3. A terminal bank for switches comprising a mounting strip, and aplurality of longitudinally extending bare conductors embedded in saidstrip in a non-inductive and non-conductive relation to each other, eachof said conductors being provided with a plurality of contact surfacesbetween its ends projecting from said strip.

4. In a terminal bank, the combination of sets of twisted conductorsembedded in a solid mass of insulating material, and sets of multiplecontacts integral with said conductors.

5. In a terminal bank, a pair of wires having integral projectingcontact portions, said wires being transposed and embedded in aninsulating compound so that the contact portions project from the faceof the bank.

In witness whereof, I hereunto subscribe my name this 16th day ofSeptember A. D.,

JOHN N. REYNOLDS.

